pg_select
Select records
&reftitle.description;
arraystringfalsepg_select
PgSql\Connectionconnection
stringtable_name
arrayconditions
intflagsPGSQL_DML_EXEC
intmodePGSQL_ASSOC
pg_select selects records specified by
conditions which has
field=>value. For a successful query, it returns an
array containing all records and fields that match the condition
specified by conditions.
If flags is set,
pg_convert is applied to
conditions with the specified flags.
If mode is set,
the return value will be in the form of an array
with PGSQL_NUM, an associative array
with PGSQL_ASSOC (default) or both
with PGSQL_BOTH.
By default pg_select passes raw values. Values
must be escaped or PGSQL_DML_ESCAPE option must be
specified. PGSQL_DML_ESCAPE quotes and escapes
parameters/identifiers. Therefore, table/column names became case
sensitive.
Note that neither escape nor prepared query can protect LIKE query,
JSON, Array, Regex, etc. These parameters should be handled
according to their contexts. i.e. Escape/validate values.
&reftitle.parameters;
connection
&pgsql.parameter.connection;
table_name
Name of the table from which to select rows.
conditions
An array whose keys are field names in the table table_name,
and whose values are the conditions that a row must meet to be retrieved.
flags
Any number of PGSQL_CONV_FORCE_NULL,
PGSQL_DML_NO_CONV,
PGSQL_DML_ESCAPE,
PGSQL_DML_EXEC,
PGSQL_DML_ASYNC or
PGSQL_DML_STRING combined. If PGSQL_DML_STRING is part of the
flags then the query string is returned. When PGSQL_DML_NO_CONV
or PGSQL_DML_ESCAPE is set, it does not call pg_convert internally.
mode
Any number of PGSQL_ASSOC,
PGSQL_NUM or
PGSQL_BOTH
If PGSQL_ASSOC is set the return value will be an associative array,
with PGSQL_NUM the return value will be an array, and
with PGSQL_BOTH the return value will be both an associative and
numerically indexed array.
&reftitle.returnvalues;
Returns string if PGSQL_DML_STRING is passed
via flags, otherwise it returns an array on success, &return.falseforfailure;.
&reftitle.changelog;
&Version;
&Description;
&pgsql.changelog.connection-object;
7.1.0
The mode parameter was added.
&reftitle.examples;
pg_select example
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&reftitle.seealso;
pg_convert